What is the cheapest airline to fly from Chicago to Trenton, New Jersey round-trip?

According to our current data, Frontier ($190), offers the cheapest pricing from Chicago to Trenton, New Jersey.

What is the cheapest day to fly from Chicago to Trenton, New Jersey?

Travelers seeking maximum savings on their Chicago to Trenton, New Jersey flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Trenton, New Jersey ranges from 2.9 - 4.8 inches per month. July is typically the wettest month, when rainfall can reach 4.8 in. February is typically the driest time to visit Trenton, New Jersey when rainfall is around 2.9 in.

If weather is an important factor for your trip to Trenton, New Jersey, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest day to fly round-trip from Chicago to Trenton, New Jersey?

Flights from Chicago to Trenton, New Jersey are found to be more expensive on Thursday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Trenton, New Jersey.

How far in advance should I book a flight from Chicago to Trenton, New Jersey?

Users have found that booking a flight from Chicago to Trenton, New Jersey at least 28 days early can save you up to 74% on average compared to booking a flight this week. If booking 28 days before your flight isn’t an option for you, users have found flights from Chicago to Trenton, New Jersey for as little as $181 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $328 for flights departing within the next 3 days.

What is the cheapest month to fly from Chicago to Trenton, New Jersey?

Our data shows that January tends to be the cheapest month to fly to Trenton, New Jersey from Chicago. Users have commonly found prices around $196 for the month, but tickets can be as low as $79. Due to multiple factors, prepare for potentially higher prices in December.

What airport do you fly into for flights to Trenton from Chicago?

For a flight from Chicago to Trenton, you will be flying into Trenton-Mercer. Trenton-Mercer (TTN) is just 4.8 mi from the center of the city. Trenton-Mercer is the only Trenton airport and it handles 0 inbound flights from Chicago per day. 1 airline has flights to Trenton-Mercer from Chicago on a regular basis.

Can I find deals for flights from Chicago to Trenton that include hotel bookings?

Yes. In addition to deals on Chicago to Trenton flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Chicago to Trenton?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Trenton.

Can I find deals for business class flights from Chicago to Trenton?

Yes. Cheapflights offers flight deals from Chicago to Trenton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$53+ Flights from Chicago to Trenton, NJ

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Cheap flight deals from Chicago to Trenton

Round-trip from	$190 (Priceline)
One-way from	$53 (Priceline)
Popular in	December
Cheapest in	January
Average price	$191

From Chicago (CHI) to Trenton-Mercer

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One-way flight from Chicago (CHI) to Trenton-Mercer

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Highest demand for flights based on searches. 6% potential increase in price ($14 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Chicago to Trenton

Cheapest flights from Chicago to Trenton
Explore the most affordable flight options available from Chicago to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Fri 8/155:01 amORD - TTN

1 stop5h 21mFrontier

Mon 8/185:15 pmTTN - ORD

1 stop7h 50mFrontier

Deal found 7/2

$190

Best flights from Chicago to Trenton
Discover carefully curated flight deals from Chicago to Trenton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2025.

Fri 8/155:01 amORD - TTN

1 stop5h 21mFrontier

Mon 8/185:15 pmTTN - ORD

1 stop7h 50mFrontier

Deal found 7/2

$190

Last-minute flights from Chicago to Trenton
Discover last-minute flight deals from Chicago to Trenton. Data last updated July 2, 2025 and is based on user searches.

Fri 7/114:26 pmORD - TTN

1 stop6h 33mFrontier

Mon 7/145:15 pmTTN - ORD

1 stop7h 16mFrontier

Deal found 7/2

$251

Fri 8/155:01 amORD - TTN

1 stop5h 21mFrontier

Mon 8/185:15 pmTTN - ORD

1 stop7h 50mFrontier

Deal found 7/2

$190

One-way flights from Chicago to Trenton
Search for one-way flight options from Chicago to Trenton. Find affordable one-way fares based on user searches. Data last updated July 2, 2025.

Mon 7/285:01 amORD - TTN

1 stop5h 21mFrontier

Deal found 7/2

$53

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago to Trenton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Fri 8/15

5:01 am-11:22 am

1 stop5h 21m

Trenton-Mercer

Mon 8/18

5:15 pm-12:05 am

1 stop7h 50m

$190

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Mon 7/28

5:01 am-11:22 am

1 stop5h 21m

$53

ChicagoTrenton

ORD - TTN

ORDTTN

Chicago O'Hare Intl

Sat 7/5

10:43 am-11:59 pm

2 stops12h 16m

$440

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Chicago to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Chicago with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Trenton

What is the cheapest month to book a flight from Chicago to Trenton, New Jersey?

Currently, January is the cheapest month in which you can book a flight from Chicago to Trenton, New Jersey (average of $73). Flying from Chicago to Trenton, New Jersey in June is currently the most expensive (average of $153). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to TTN?

It’s typically best to fly out from Chicago to Trenton, New Jersey at noon. Doing so could potentially save you 76% on the flight price compared to flying in the evening, which is usually more expensive.

Reviews of airlines servicing Trenton

Read through reviews of airlines operating flights from Chicago to Trenton, such as Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Frontier

5.9

Fair

3,290 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.

Frontier

5.9

Fair

3,290 reviews

Frontier

5.9

Fair

3,290 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

Related info for your journey

What airport do you fly into for flights to Trenton from Chicago?
For a flight from Chicago to Trenton, you will be flying into Trenton-Mercer. Trenton-Mercer (TTN) is just 4.8 mi from the center of the city. Trenton-Mercer is the only Trenton airport and it handles 0 inbound flights from Chicago per day. 1 airline has flights to Trenton-Mercer from Chicago on a regular basis.
What is the cheapest airline to fly from Chicago to Trenton, New Jersey round-trip?
According to our current data, Frontier ($190), offers the cheapest pricing from Chicago to Trenton, New Jersey.
Can I find deals for flights from Chicago to Trenton that include hotel bookings?
Yes. In addition to deals on Chicago to Trenton flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Chicago to Trenton?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Trenton.
Can I find deals for business class flights from Chicago to Trenton?
Yes. Cheapflights offers flight deals from Chicago to Trenton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Chicago to Trenton, New Jersey?
Currently, January is the cheapest month in which you can book a flight from Chicago to Trenton, New Jersey (average of $73). Flying from Chicago to Trenton, New Jersey in June is currently the most expensive (average of $153). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Chicago to Trenton

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$61	Average$201	FlexibilityNo cancel fee	On-time62%

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$53+ Cheap flights from Chicago (CHI) to Trenton, NJ (TTN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Chicago to Trenton with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Chicago to Trenton

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Chicago to Trenton

Cheapest flights from Chicago to TrentonExplore the most affordable flight options available from Chicago to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Explore the most affordable flight options available from Chicago to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago to Trenton that are best for you.

Best time to book a flight from Chicago to Trenton

Have a flexible travel schedule? Discover the best time to fly to Trenton from Chicago with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Trenton

What is the cheapest month to book a flight from Chicago to Trenton, New Jersey?

What is the cheapest time of day to fly from CHI to TTN?

Find hourly flight availability from Chicago to Trenton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2025.

Reviews of airlines servicing Trenton

Read through reviews of airlines operating flights from Chicago to Trenton, such as Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Trenton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Trenton from Chicago?

What is the cheapest airline to fly from Chicago to Trenton, New Jersey round-trip?

Can I find deals for flights from Chicago to Trenton that include hotel bookings?

How can I find direct flights from Chicago to Trenton?

Can I find deals for business class flights from Chicago to Trenton?

What is the cheapest month to book a flight from Chicago to Trenton, New Jersey?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Trenton

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Chicago to Trenton

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Travel Smart

Cheapest flights from Chicago to Trenton
Explore the most affordable flight options available from Chicago to Trenton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.